I recently purchased an SL, and have the 90mm Summicron-SL as my only SL lens. I plan to buy the 50 Summicron-SL when it comes out, but who knows when that will be. So, I am on the fence between the 50mm Summilux-SL and the 0.95 Noctilux in the meantime. Does anyone have experience with both on the SL? and what opinions do you have to either? Looking at the specs, it appears that the Summilux weighs much more than the Noctilux does. On the other hand, the Summilux benefits from Leica's recent innovations. Difficult choice.